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What can transparency be used for in ArcGIS?
Transparency can be used for any symbolization type, but it is especially useful for drawing raster layers with other layers on your map. Adding transparency to the top layers allows you to see them while still viewing underlying layers.
How are WMS service layers transmitted to ArcMap?
With WMS services, the legends for layers are transmitted over the Internet as one image containing all the symbols. Although ArcMap supports legend entries with multiple symbols in its table of contents, ArcMap expects these entries to contain multiple images, one image per symbol.
How is the rendering of a WMS layer determined?
Depending on how the WMS service is authored, you may be able to change the rendering of a WMS layer. WMS layer rendering is determined by a style. The style consists of the symbols and colors used to represent features in a WMS service. The WMS specification allows a WMS layer to contain any number of styles.
How do I change the Order of the layers in WMS?
The layers you choose appear in a flat, ungrouped list, the same as they appear in the list on the right. To change the drawing order, click the Just the layers listed below option and move the WMS sublayers you want in your map to the right side of the dialog box.
Why do you need a basemap layer in ArcGIS?
Basemap layers are a kind of map layer that provides a framework onto which you display your dynamic operational information. Basemap display performance is very fast. Since basemap layers are relatively static and do not change frequently, their display can be computed once and reused many times.
How do I change the transparency of a layer?
Click the Adjust Transparency button and drag the slider bar to adjust the transparency. For layers using a single symbol or for layers displayed by category, you can set the transparency of individual features using field values to set percent transparency.
Is there a way to dim the basemap layer?
Essentially, dimming is a way of muting the basemap layer’s appearance so that you can see the layers on top of it more clearly. To dim a basemap layer, click the Adjust Dim Level command on the Effects toolbar and change the Dim Level slider in the same way that you change any other effect.
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